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The WFD116B-030 is a 16A, B Curve Arc Fault Detection (AFDD) RCBO, providing arc fault detection, residual current protection (30mA), short-circuit, and overload protection in one device. Designed to BS 7671:2018 (18th Edition) standards, it offers advanced fire prevention and peace of mind for installers and property owners.
Unlike standard RCBOs, this AFDD RCBO includes a microprocessor-driven arc detection system. It monitors the electrical waveform and trips instantly when dangerous arc impulses occur, caused by damaged cables, loose terminations, faulty appliances, or ageing wiring. Both live and neutral poles are disconnected, ensuring complete circuit isolation.
Installer Tip: The 16A version is well-suited to kitchen ring circuits, small power circuits, and areas with higher load appliances where fire protection is a must.
Protective Coverage
This AFDD RCBO protects against:
- Arc faults – series and parallel
- Residual current leakage – Type A (AC + pulsed DC)
- Overload and short-circuit conditions
- Overvoltage – trips at 275V ±5%
Variant Comparison
| Model | Rating | Curve | Sensitivity |
|---|---|---|---|
| WFD106B-030 | 6A | B Curve | 30mA |
| WFD110B-030 | 10A | B Curve | 30mA |
| WFD116B-030 (This Product) | 16A | B Curve | 30mA |
| WFD120B-030 | 20A | B Curve | 30mA |
| WFD132B-030 | 32A | B Curve | 30mA |
| WFD140B-030 | 40A | B Curve | 30mA |
